Things I liked:Price, easy to mount, easy to see the dot, dot has surprisingly low parallax for such a cheap RDSThings I would have changed:Adjusting the zero is a bit clumsy, battery life is short (about 8-12 hours), top section is a bit wobbly, replacing the battery is a chore (the "dial" in the front is the battery cover)What others should know:This sight will slide around on break-barrel springers. Tighten the adjustment screws well, but be careful not to go to much. Also, my switch popped out the first time I dropped it. I was able to glue it back in, but this is not a rugged sight.

Things I liked:I put this on my Crosman Silloutte pistol but could not get it to sight in. The thing is very cheap and a couple of times the light would go out for no reason. Things I would have changed:Make the scope a little more sturdy....Make it feel like you actually bought something of value
What others should know:I don't recommend this scope just from the experience that I had with it. I would recommend spending a little bit more and getting something worth the money.

Things I liked:Simple to install and zero in. Things I would have changed:More than one brightness level would be a nice extra-cost feature. The free wheeling elevation adjustment knob is a problem but I discovered it can be held in place by slipping an o-ring over it.What others should know:Good value for only $12.00.